Identify the verb’s infinitive ending: -ir
Remove the -ir ending to get the stem
Add the present tense endings:
yo: -o
tú: -es
él/ella/usted: -e
nosotros/nosotras: -imos
vosotros/vosotras: -ís
ellos/ellas/ustedes: -en
Example: vivir
yo vivo
tú vives
él/ella/usted vive
nosotros/nosotras vivimos
vosotros/vosotras vivís
ellos/ellas/ustedes viven
Use the correct tense endings for other tenses, such as past, future, and subjunctive
Remember that some -ir verbs are irregular and do not follow the standard pattern
Check for stem-changing -ir verbs when conjugating in certain forms
Match the verb form to the subject pronoun and tense needed